Vulnerability Assessment & Network Security Forums



If through a vulnerability assessment, a network security issue is detected for the vulnerability below, applying the appropriate security patches in a timely matter is very important.  If you have detected that your system has already been compromised, following CERT's Network Security recovery document will assist with recommended steps for system recovery.


Home >> Browse Vulnerability Assessment Database >> Gentoo Local Security Checks >> [GLSA-200405-07] Exim verify=header_syntax buffer overflow


Vulnerability Assessment Details

[GLSA-200405-07] Exim verify=header_syntax buffer overflow

Vulnerability Assessment Summary
Exim verify=header_syntax buffer overflow

Detailed Explanation for this Vulnerability Assessment
The remote host is affected by the vulnerability described in GLSA-200405-07
(Exim verify=header_syntax buffer overflow)


When the option "verify = header_syntax" is used in an ACL in the
configuration file, Exim is vulnerable to a buffer overflow attack that can
be triggered remotely by sending malicious headers in an email message.
Note that this option is not enabled in Exim's default configuration file.

Impact

This vulnerability can be exploited to trigger a denial of service attack
and potentially execute arbitrary code with the rights of the user used by
the Exim daemon (by default this is the "mail" user in Gentoo Linux).

Workaround

Make sure the verify=header_syntax option is not used in your exim.conf
file.

References:
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2004-0400


Solution:
All users of Exim should upgrade to the latest stable version:
# emerge sync
# emerge -pv ">=net-mail/exim-4.33-r1"
# emerge ">=net-mail/exim-4.33-r1"


Network Security Threat Level: High


Networks Security ID:

Vulnerability Assessment Copyright: (C) 2005 Michel Arboi

Cables, Connectors

Vintage COMMODORE PLUS/4 MANUALS--USER'S & INTEGRATED SOFTWARE
$17.99
Vintage COMMODORE PLUS/4 MANUALS--USER'S & INTEGRATED SOFTWARE pictureVintage Dell Dimension L400c Celeron 400MHz 256MB 40GB CDRW Windows 98SE BUNDLE
$99.0
Vintage Dell Dimension L400c Celeron 400MHz 256MB 40GB CDRW Windows 98SE BUNDLE pictureVintage Apple wireless Mouse M9269ZM/A White
$12.0
Vintage Apple wireless Mouse M9269ZM/A White pictureVINTAGE IBM MODEL M 1987 CLICKY KEYBOARD PART # 139401
$49.99
VINTAGE IBM MODEL M 1987 CLICKY KEYBOARD PART # 139401 picture


Discussions

No Discussions have been posted on this vulnerability.